(WORTH TOWNSHIP) -- Two people sustained serious non-life threatening injuries in a snowmobile accident that occurred Saturday evening on Birchwood Road near Forest Road in Worth Township. Sanilac County Sheriff's deputies say a 28-year old Port Huron woman was operating a snowmobile when she attempted to turn onto Birchwood Road and lost control, causing the snowmobile to leave the roadway and strike two trees. The woman and her passenger, a 30-year old Lexington man, were thrown from the snowmobile. They were not wearing helmets. Both were taken to Port Huron Hospital for treatment of injuries. The incident remains under investigation, with alcohol and speed both being a factor. Charges are pending against both subjects, whose names have not been released. Deputies were assisted by Lexington Fire and Rescue, Croswell EMS, and Lexington Police.